- Treatments
- Brain Tumors
Awake Craniotomy and Mapping for Excision of Brain Tumour
An awake craniotomy is a surgical procedure where a part of the skull is temporarily removed to access the brain, and the patient remains awake during part of the surgery. This technique allows surgeons to monitor brain function in real time while removing a tumour, especially if it is located near areas that control speech, movement, or other critical functions.
Why Is an Awake Craniotomy Performed?
- Have brain tumours located near or within areas responsible for critical functions, such as speech, motor control, or sensory processing
- Require precise monitoring of brain function to ensure minimal damage to healthy tissue
- Need the safest method for tumour removal to preserve quality of life
What Is Brain Mapping?
Brain mapping is a process used during an awake craniotomy to identify and monitor specific areas of the brain responsible for speech, movement, vision, or other functions. By stimulating different parts of the brain and observing responses, surgeons can accurately distinguish between healthy tissue and the tumour.
How Is an Awake Craniotomy and Mapping Performed?
Preparation
- The patient is given local anaesthesia to numb the scalp and sedation to ensure comfort during the initial phase of surgery.
- Imaging studies, such as MRI or CT scans, are used to plan the surgery and determine the tumour’s location.
Performing the Craniotomy
- A section of the skull is removed to expose the brain.
- The dura mater (the brain’s protective covering) is opened to access the tumour.
Awake Phase and Mapping
- The patient is awakened during the surgery and asked to perform tasks like speaking, moving, or counting.
- The surgeon uses a small electrical probe to stimulate different brain areas and identify regions controlling critical functions.
- The tumour is removed while preserving important brain tissue based on the mapping results.
Completion of Surgery
- Once the tumour is removed, the patient is sedated again.
- The dura mater is closed, the skull piece is replaced and secured, and the incision is closed with sutures or staples.
Benefits of Awake Craniotomy and Mapping
- Real-Time Monitoring: Ensures that critical brain functions are preserved during tumour removal.
- Precise Tumour Removal: Allows for maximum tumour resection with minimal impact on healthy tissue.
- Improved Outcomes: Reduces the risk of permanent neurological deficits and improves recovery.
Risks and Complications
- Seizures: Brain stimulation during mapping may trigger a seizure, though this is rare and can be controlled.
- Temporary Discomfort: The awake phase may cause anxiety or discomfort, though patients are supported throughout.
- Infection or Bleeding: Risks common to any brain surgery.
- Temporary Neurological Deficits: Some patients may experience temporary changes in speech, movement, or sensation.
Who Is a Candidate for This Procedure?
- Have brain tumours near areas critical for speech, motor control, or sensory functions
- Are mentally prepared and able to cooperate during the awake phase of surgery
- Are in good overall health and able to tolerate the procedure
Recovery and Aftercare
- Hospital Stay: Patients typically stay in the hospital for 5–7 days for observation and recovery.
- Recovery Period: Full recovery may take weeks to months, depending on the tumour’s location and the complexity of the surgery.
- Rehabilitation: Some patients may need physical therapy, occupational therapy, or speech therapy to regain lost functions.
- Follow-Up Care: Regular imaging, such as MRI scans, ensures the tumour has been completely removed and checks for recurrence.
How It Differs from Standard Craniotomy
- Awake Craniotomy: The patient is awake during part of the procedure to allow for real-time monitoring of brain function, ideal for tumours near critical areas.
- Standard Craniotomy: The patient remains fully sedated, used for tumours in less sensitive brain regions.
Outcomes & Conclusion
Awake craniotomy and mapping are highly effective for safely removing brain tumours located near critical brain areas. By preserving essential functions, this approach significantly improves the patient’s quality of life and reduces the risk of long-term complications.
Awake craniotomy and brain mapping are advanced surgical techniques that provide precise tumour removal while safeguarding critical brain functions. By combining careful planning, real-time monitoring, and skilled execution, this procedure offers patients excellent outcomes and improved quality of life. With proper recovery and follow-up, most patients can return to their normal activities and experience significant relief from symptoms.
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